// TI File $Revision: /main/2 $
// Checkin $Date: March 1, 2007   15:57:02 $
//###########################################################################
//
// FILE:	DSP2833x_Sci.h
//
// TITLE:	DSP2833x Device SCI Register Definitions.
//
//###########################################################################
// $TI Release: F2833x Support Library v2.01.00.00 $
// $Release Date: Sun Oct  4 16:07:01 IST 2020 $
// $Copyright:
// Copyright (C) 2009-2020 Texas Instruments Incorporated - http://www.ti.com/
//
// Redistribution and use in source and binary forms, with or without 
// modification, are permitted provided that the following conditions 
// are met:
// 
//   Redistributions of source code must retain the above copyright 
//   notice, this list of conditions and the following disclaimer.
// 
//   Redistributions in binary form must reproduce the above copyright
//   notice, this list of conditions and the following disclaimer in the 
//   documentation and/or other materials provided with the   
//   distribution.
// 
//   Neither the name of Texas Instruments Incorporated nor the names of
//   its contributors may be used to endorse or promote products derived
//   from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// $
//###########################################################################

#ifndef DSP2833x_SCI_H
#define DSP2833x_SCI_H

#ifdef __cplusplus
extern "C" {
#endif

//
// SCI Individual Register Bit Definitions
//

//
// SCICCR communication control register bit definitions
//
struct  SCICCR_BITS {         // bit    description
    Uint16 SCICHAR:3;         // 2:0    Character length control        
    Uint16 ADDRIDLE_MODE:1;   // 3      ADDR/IDLE Mode control
    Uint16 LOOPBKENA:1;       // 4      Loop Back enable
    Uint16 PARITYENA:1;       // 5      Parity enable   
    Uint16 PARITY:1;          // 6      Even or Odd Parity
    Uint16 STOPBITS:1;        // 7      Number of Stop Bits
    Uint16 rsvd1:8;           // 15:8   reserved
};  

union SCICCR_REG {
    Uint16              all;
    struct SCICCR_BITS  bit;
};

//
// SCICTL1 control register 1 bit definitions
//                       
struct  SCICTL1_BITS {        // bit    description
    Uint16 RXENA:1;           // 0      SCI receiver enable
    Uint16 TXENA:1;           // 1      SCI transmitter enable
    Uint16 SLEEP:1;           // 2      SCI sleep  
    Uint16 TXWAKE:1;          // 3      Transmitter wakeup method
    Uint16 rsvd:1;            // 4      reserved
    Uint16 SWRESET:1;         // 5      Software reset   
    Uint16 RXERRINTENA:1;     // 6      Recieve interrupt enable
    Uint16 rsvd1:9;           // 15:7   reserved
}; 

union SCICTL1_REG {
    Uint16               all;
    struct SCICTL1_BITS  bit;
};

//
// SCICTL2 control register 2 bit definitions
//
struct  SCICTL2_BITS {        // bit    description
    Uint16 TXINTENA:1;        // 0      Transmit interrupt enable    
    Uint16 RXBKINTENA:1;      // 1      Receiver-buffer break enable
    Uint16 rsvd:4;            // 5:2    reserved
    Uint16 TXEMPTY:1;         // 6      Transmitter empty flag
    Uint16 TXRDY:1;           // 7      Transmitter ready flag  
    Uint16 rsvd1:8;           // 15:8   reserved
}; 

union SCICTL2_REG {
    Uint16               all;
    struct SCICTL2_BITS  bit;
};

//
// SCIRXST Receiver status register bit definitions
//
struct  SCIRXST_BITS {        // bit    description
    Uint16 rsvd:1;            // 0      reserved
    Uint16 RXWAKE:1;          // 1      Receiver wakeup detect flag
    Uint16 PE:1;              // 2      Parity error flag
    Uint16 OE:1;              // 3      Overrun error flag
    Uint16 FE:1;              // 4      Framing error flag
    Uint16 BRKDT:1;           // 5      Break-detect flag   
    Uint16 RXRDY:1;           // 6      Receiver ready flag
    Uint16 RXERROR:1;         // 7      Receiver error flag
}; 

union SCIRXST_REG {
    Uint16               all;
    struct SCIRXST_BITS  bit;
};

//
// SCIRXBUF Receiver Data Buffer with FIFO bit definitions
// 
struct  SCIRXBUF_BITS {       // bits   description
    Uint16 RXDT:8;            // 7:0    Receive word
    Uint16 rsvd:6;            // 13:8   reserved
    Uint16 SCIFFPE:1;         // 14     SCI PE error in FIFO mode
    Uint16 SCIFFFE:1;         // 15     SCI FE error in FIFO mode
}; 

union SCIRXBUF_REG {
    Uint16                all;
    struct SCIRXBUF_BITS  bit;
};

//
// SCIPRI Priority control register bit definitions
//                                                    
struct  SCIPRI_BITS {         // bit    description
    Uint16 rsvd:3;            // 2:0    reserved
    Uint16 FREE:1;            // 3      Free emulation suspend mode
    Uint16 SOFT:1;            // 4      Soft emulation suspend mode
    Uint16 rsvd1:3;           // 7:5    reserved
};

union SCIPRI_REG {
    Uint16              all;
    struct SCIPRI_BITS  bit;
};

//
// SCI FIFO Transmit register bit definitions
//                                                 
struct  SCIFFTX_BITS {        // bit    description
    Uint16 TXFFIL:5;          // 4:0    Interrupt level
    Uint16 TXFFIENA:1;        // 5      Interrupt enable
    Uint16 TXFFINTCLR:1;      // 6      Clear INT flag
    Uint16 TXFFINT:1;         // 7      INT flag
    Uint16 TXFFST:5;          // 12:8   FIFO status
    Uint16 TXFIFOXRESET:1;    // 13     FIFO reset
    Uint16 SCIFFENA:1;        // 14     Enhancement enable
    Uint16 SCIRST:1;          // 15     SCI reset rx/tx channels     
}; 

union SCIFFTX_REG {
    Uint16               all;
    struct SCIFFTX_BITS  bit;
};

//
// SCI FIFO recieve register bit definitions
//                                                
struct  SCIFFRX_BITS {        // bits   description
    Uint16 RXFFIL:5;          // 4:0    Interrupt level
    Uint16 RXFFIENA:1;        // 5      Interrupt enable
    Uint16 RXFFINTCLR:1;      // 6      Clear INT flag
    Uint16 RXFFINT:1;         // 7      INT flag
    Uint16 RXFFST:5;          // 12:8   FIFO status
    Uint16 RXFIFORESET:1;     // 13     FIFO reset
    Uint16 RXFFOVRCLR:1;      // 14     Clear overflow
    Uint16 RXFFOVF:1;         // 15     FIFO overflow
}; 

union SCIFFRX_REG {
    Uint16               all;
    struct SCIFFRX_BITS  bit;
};

//
// SCI FIFO control register bit definitions
//
struct  SCIFFCT_BITS {        // bits   description
    Uint16 FFTXDLY:8;         // 7:0    FIFO transmit delay
    Uint16 rsvd:5;            // 12:8   reserved
    Uint16 CDC:1;             // 13     Auto baud mode enable
    Uint16 ABDCLR:1;          // 14     Auto baud clear
    Uint16 ABD:1;             // 15     Auto baud detect
};
    
union SCIFFCT_REG {
    Uint16               all;
    struct SCIFFCT_BITS  bit;
};

//
// SCI Register File
//
struct  SCI_REGS {
    union SCICCR_REG     SCICCR;     // Communications control register
    union SCICTL1_REG    SCICTL1;    // Control register 1
    Uint16               SCIHBAUD;   // Baud rate (high) register
    Uint16               SCILBAUD;   // Baud rate (low) register
    union SCICTL2_REG    SCICTL2;    // Control register 2
    union SCIRXST_REG    SCIRXST;    // Recieve status register
    Uint16               SCIRXEMU;   // Recieve emulation buffer register
    union SCIRXBUF_REG   SCIRXBUF;   // Recieve data buffer  
    Uint16               rsvd1;      // reserved
    Uint16               SCITXBUF;   // Transmit data buffer 
    union SCIFFTX_REG    SCIFFTX;    // FIFO transmit register
    union SCIFFRX_REG    SCIFFRX;    // FIFO recieve register
    union SCIFFCT_REG    SCIFFCT;    // FIFO control register
    Uint16               rsvd2;      // reserved
    Uint16               rsvd3;      // reserved
    union SCIPRI_REG     SCIPRI;     // FIFO Priority control   
};

//
// SCI External References & Function Declarations
//
extern volatile struct SCI_REGS SciaRegs;
extern volatile struct SCI_REGS ScibRegs;
extern volatile struct SCI_REGS ScicRegs;

#ifdef __cplusplus
}
#endif /* extern "C" */

#endif  // end of DSP2833x_SCI_H definition

//
// End of file
//

